Low mic volume on all roms

Hi,

I have a Galaxy s3 UK version i have recently went back to it and updated to Android lollipop and used many roms including the touchwiz 4.4.4 roms.

However, my mic volume is low i tried recording my voice and i could barely hear it and the same when the other person is on the other side of the phone.

I've tried using boeflla kernel to raise the mic volume but still the same problem.